Set alarm for 10:00 AM
Recently used Functions
| Alarm 11:59 AM | 11:59 AM |
| Alarm 11:59 PM | 11:59 PM |
| Alarm 6:00 AM | 6:00 AM |
| Alarm 7:00 AM | 7:00 AM |
| Alarm 8:00 AM | 8:00 AM |
| Alarm 9:00 AM | 9:00 AM |
| Alarm 10:00 AM | 10:00 AM |
| Alarm 12:00 PM | 12:00 PM |
| Alarm 7:55 PM | 7:55 PM |
| Alarm 6:55 PM | 6:55 PM |
Sleeping backwards from 10:00 AM
Waking mid-cycle is what makes an alarm feel brutal. Working back from 10:00 AM in 90-minute blocks — plus a quarter of an hour to drop off — gives these targets.
| 12:46 AM | 6 sleep cycles | 9 hours of sleep |
| 2:16 AM | 5 sleep cycles | 7.5 hours of sleep |
| 3:46 AM | 4 sleep cycles | 6 hours of sleep |
These are planning figures, not medical advice — cycle length varies between people and from night to night.
What 10:00 AM looks like elsewhere
Ten in the morning is a common slot for meetings, medication doses, and weekend lie-in limits.
| 12-hour clock | 10:00 AM |
| 24-hour clock | 10:00 |
| Military time | 1000 ("1000 hours") |
| Relative to midday | 2h 00m before midday |
| Since midnight | 600 minutes (42% of the day) |
| Until midnight | 840 minutes |
If you set this alarm right now it would ring in about 1h 21m.
Questions about the 10:00 AM alarm
What time do I need to sleep to wake up at 10:00 AM?
To get about 7.5 hours you would fall asleep around 2:16 AM, or 12:46 AM for a fuller 9 hours. Both allow roughly 15 minutes to drop off and finish on a complete sleep cycle.
What is 10:00 AM in 24-hour time?
10:00 AM is 10:00 on a 24-hour clock, written 1000 in military and aviation formats. It sits 2h 00m before midday and 600 minutes after midnight.
Will this 10:00 AM alarm work if I close the tab?
No. The alarm runs in the page, so the tab has to stay open, though it can be in the background and it keeps working without an internet connection once loaded. Bookmark the page and the 10:00 AM setting is restored when you open it again.
How the 10:00 AM alarm works
This page is preset to 10:00 AM. Press Set Alarm and it rings at the next 10:00 AM, counting down on screen until it does. Nothing to install, no account — bookmark the URL and the 10:00 AM setting comes back with it.
Set the hour and minute for the online alarm clock. Once you set the hour and minute for the online alarm clock, the alarm message will appear, and the preselected sound will play at the set time. You can also click the 'Test' button to preview the alert and check the sound volume.
You can customize the alarm clock's appearance, including text color, type, and size, and these settings will be saved for the next time you open your web browser.
The online alarm clock won't work if you close your browser or shut down your computer, but it can work without an internet connection. This free online alarm clock will reliably wake you up.
You can add links to online alarm clocks with different time settings to your browser's Favorites. Opening one of these links will automatically set the alarm clock to the predefined time.